Apparatus relating to the manufacture of envelopes



Oct. 8, 1929.

W. W. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan. 12. 1928 INVENTOR:

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W. W. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Oct. 8, 1929.

Filed Jan.- 12; 1928 17 Sheets-Sheet 2 222 w x a f; W 1 1 INVENTORS Oct. 8, 1929. w. w. WARRINGTON 3 APPARATUS'RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan 12, 1928 l7 Sheets-Sheet M/ILL/HM Wars/a %l?/EINETON lNVENTOR '1 433k Aflumey.

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Oct. 8, 1929.

W. W. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF .ENVELOPES Filed Ja n. 12, 1928 17 Sheets-Sheet WILLIAM WALTER. WHIZEINGTON INVENTOR f w Ahorneg.

Oct. 8, 1929. w. w. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF EIVELOPES Filed Jan. 12, 1928 17 Sheets-Sheet 7 \AhLunM WA umRWARRmaTou INVENTOR Atbrney.

Oct. 8, 1929.

W. .W. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan; 12. 1928 17 Sheets-Sheet 8 \NVENTOR WI Lur-m Wan-m warmmcnor AM Miumas' Oct. 8, 1929.

W, W. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan. 12. 192B 17 Sheets-Sheet 9 WI LLIHM WALTER, WA rmm'e'ro N INVENTQR;

1929, w. w. WARRINGTON 1,730,751

APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan. 12, 1928 17 Sheets-Sheet ll WILLmM WALTER WHRRINGTON INVE NTOR:

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APPARATUS RELATING TO THE MANUFACTURE OF ENVBLOPES Filed Jan. 12. 1928 17 SheetsSheet 13 Wmumw WALTER. WRRRNGTDN INVENTOR Oct- 8, 1929. w. w. WARRINGTON 1,730,751 1 I APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan. 12, 1928 17 Sheets-Sheet 14 97 lv l I /2/ KW; I/II M5 ii; 5 m7 Attorneg.

Oct. 8, 1929. w. w. WARRINGTON APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Fil ed Jan. 12, 1928 17 Sheets-Sheet l5 WILLI Pm WBLTERWHRRI Ncn'rm INVENTOR -14 Miomeg.

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APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES Filed Jan. 12, 1928 l7 Sheets-Sheet l6 WILLmM WHLTCRWHR-RINGTON \NVE NTOR Oct. 8,; 1929. w. w. WARRINGTON APPARATUS RELATING'TO THE MANUFACTURE OF ENVELOPES Filed Jan. 12, 1928 17 Sheets-Sheet 1'7 WILLIAM Wanna Wanamsrou INVENTOR t X k A 8% Atiumeg.

Patented Dot. 8, 1929 UNITED STATES,

PATENT OFFICE APPARATUS RELATING TO THE MANUFACTURE OF ENVELOPES I Application filed January 12, 1928, Serial No. 246,227, and in Australia February 7, 1927.

This invention relates to apparatus for manufacturing envelopes from blanks of suitable material which have been previously formed or cut to any desired size or shape.

The principal object of the invention is to provide apparatus which is of simple and cheap construction, less likely to be rendered inoperative whilst in use through broken or disorganized parts less likely to cause expense in repair, and adapted for the manufacture of envelopes effectively and expeditiously.

Another object of the invention is to provide' means whereby pre-cut blanks can be automatically and continuously fed one by one from a pile thereof to means for applying adhesive thereto and whereby the blanks will be subsequently creased and thereafter folded to required shape for the envelopes to be formed.

A further object of the invention is to provide means whereby the envelopes after having been formed will be automatically ejected-from the apparatus.

2 The invention also consists of certain parts and details and combinations of the same which are fully described herein.

Referring to the accompanying drawings in which the. invention is illustrated; Fig. 1

is a perspective view of the apparatus; Fig.

2 a side elevation thereof; Fig. 3 detail perspective view illustrating means for feeding blanks to be folded to envelope form; Fig. 4 longitudinal sectional elevation of means shown in Fig. 3; Fig. 5 cross-sectional elevat-ion on line 55, Fig. 4; Fig. 6 detail perspective view of end of apparatus at which blanks are transferred from top of apparatus; Fig. 7 longitudinal sectional elevation of means illustrated in Fig. 6; Fig. 8 sectional elevation on line 8-8, Fig. 7; Fig. 9 enlarged perspective view of gripper means for blank carried by endless chain; Fig. 10 an elevation I view thereof; Fig. 11 a sectional detail view of such gripper means; Figs. 12 and 13 sectional views illustrative of action of gripper means in relation to a blank; Fig. 14 enlarged perspective view of creasing and folding mechanism for blanks-and means for delivering completed envelopes fromthe apparatus;

Fig. 15 perspective view of chute means for the blanks; Fig. 16 cross-section on plane 1616, Fig. 15; Fig. 17 side elevation of means shown in Fig. 14; Fig. 18 cross-section on line 1,818, Fig. 17 Fig. 19 detail View showing cam releasing means for gripper means for blank; Fig. 20 perspective view of fixed cam means; Fig. 21 side elevation of such cam means; Fig. 22 detail view of auto matic adjuster for endless belt of blank folder means; Figs. 23 and 24 perspective top and bottom views respectively of means for folding blanks to envelope form; Fig. 25 detail sectional perspective view of the said blank folding means; Fig. 26 sectional View on plane 2626, Fig. 25 ;Fig. 27 sectional view on plane 2727,' Fig. 23; Figs. 28 and 29 respectively longitudinal and cross-sectional views on planes 2828 and 29-29, Fig. 23; Fig. 30 sectional detail view of one of theplungers of the blank folder means; Fig. 31 sectional detail view of gripper means associated with the folders; Fig. 32 perspective View of a rack link associated with the folders the said link having a catch hook; Fig. 33 perspective view of means for ejecting completed envelopes from the apparatus; Fig. 34; elevational View of such ejecting means; Figs. 35 to 43 diagrammatic views illustrating creasing and folding of blanks and means for ejecting completed envelopes from apparatus.

A main framing 1 for the apparatus is provided; such framing carries at the head thereof an inclined table 2 at one end of which is an inclined platform 3, the table 2 and platform 3 having an opening t therein. The uprights 5 on the table 2 and platform 3 serve to form a magazine'for a plurality of blanks 6 which'have been previously cut to required shape to be creased and folded on the apparatus to desired envelope form. On the table 2 are bearings 7 for a shaft 8 whichhas fixed thereto a roller 9 which cooperates with an endless belt 10 which passes over pulleys 11 and 12 fixed respectively to spindles 1'3 and 14 journalled in bearings on the table 2. the latter having an opening through which the upper surfaceof the belt 10 is exposed; the table 2 also carries a bearing for an arm 15 on which a spring controlled jockey roller 16 for the belt is carried.

On the table 2 is fixed a bracket 17 having a rod 18 fixed thereto, such rod having adjustably mounted thereon the connectors 19 carrying rotatable wheels 20 adapted to contact with blanks fed rearward of the apparatus by means of the endless belt 10. Said bracket 17 has bearings 21 for a shaft 22 upon which is fixed the arm 23 carrying roller 24; said shaft has also fixed thereto the lays or stops 25 which cooperate with the springs 26 attached to the table 2. The shaft 22 also has fixed thereto a spring 2'? adapted to keep a blank to be folded in contact with the rollers 28 fixed to the rotatable shaft 29 which is journalled in bearings 34 on the framing 1. The shaft 29 has also fixed thereto a sprocket wheel 30. On the table 2 are brackets 31 having bearings for the rotatable spindle 32 to which are fixed thefriction rollers 33 serving to guide a blank between them and the rollers 28. The shaft 22 is furnished with a coil spring 67 adapted to. return it to normal 1 position after it has been rocked.

Below the table 2 and journalled in bearings 35 on the framing 1 is a rotatable shaft 38 having fixed thereto a pair of rollers 36 having a number of rubber or like friction inserts 37, the said rollers being positioned below the opening 4 in the table 2 and platform 3. Said shaft 38 also has fixed thereto the sprocket wheel 39 to which is connected the chain 40 which is also connected to a sprocket wheel 41 fixed to the spindle 13. On the table 2 is an arm 42 carrying the jockey roller 43 for the chain 40.

Journalled in hearings on the framing 1 is a rotatable shaft 44 to which is fixed a drive pulley 45. The shaft 44 has fixed thereto a spur pinion 46 which meshes with a spur wheel 47 fixed to a rotatable shaft 48 journalled in bearings 49 on the framing 1; said shaft 48 has also fixed thereto a sprocket wheel 50 to which is connected the chain 51, the latter being also connected to the sprocket wheel 30 on the rotatable shaft 29. The spur wheel 4'? also meshes with a spur wheel 52 fixed on a rotatable shaft 53 journalled in bearings 54 on the framing 1; such spur wheel 52 meshes with a spur wheel 55 fixed on the rotable shaft 38 to which the rollers 36 are fixed.

The spur wheel. 47 also meshes with a spur pinion 56 on the shaft 57 supported in bearings on the trough 61; the spur pinion 56 meshes with a spur pinion 58. on a rotatable shaft 59 ournalled in hearings on the trough 61 and having fixed thereto rollers 60 which rotate in liquid adhesive carried in the trough 61 supported on the framing 1. Said rollers 60 contact with the rotatable transfer rollers 62 mount-ed on the shaft 63'supported in bearings on the trough 61.

Beth rollers 28 have each attached to their circumference a pair of print plates 65 shaped to receive liquid adhesive from the rollers 62 and to transfer same to parts of an envelope blank passing over the said rollers 28. One of said rollers 28 may also have atfixed thereto two cams 66; these cams are positioned diametrically opposite to one another on one side of the carrying roller 28. The sprocket chain 51 has pivoted thereon but in spaced relation to each other gripper arms 68 having an extension 69 which carries a roller 70; said gripper arms 68 cooperate with a plate 71 on the sprocket chain 51 and on their shank is a coil spring 72 one end of which bears on the arm 68 and the other end of which bears against a projecting pin 73 on the chain 51. Said springs serves to normally allow the arm 68 to be pressed on the plate '11 while also allowing such arm to be raised from such plate when tie extension 69 is tripped through the roller 70 contacting with a cam or abutment plate 74 fixed on the framing 1.

Attached to the framing 1 is a chute 75; such chute has associated therewith guide frames 76 which carry a series of balls 7 7', the latter serving as tensioning guides for a blank fed along the chute 75.

There is fixed to the shaft 48 a pair of ele ments 78 having sector shaped blank creasing extensions '7 9 and on .the framrng 1' is carried tracks 80 for wheels 81 of a series of tables 82 which are linked to each other and are adapted to carry means for folding blanks to envelope form. Two series of jointing links are provided for the tables 82, one of such series of links being furnished with rack teeth 83 whilst the other series 84 thereof are plain; the rack teeth 83 have attached thereto a. catch finger 85 and the tables 82 have'attached thereto the racks 86. The rack teeth 83 and the racks 86 mesh with the spur wheel 47 on the shaft 48. In the tables 82 is an opening 87 in which opening is hinged a platform 88, having on its upper surface a rubber covering 132; said platform 88 is hinged on the pins 133 on the table 82 and it is capable of resting upon thelug 138 on the lower surface of such table. Attached to the platform 88 is the bracket 93 with roller 94 also stop bracket 95. The spindles 96 and 97 journalled in hearings on the bottom of the tables 82 have fixed thereto arms 98 and 99 with rollers 100 and 101. Such spindles 96 and 97 also respectively carry catch fingers 102 and 103. Each of the tracks 80 may carry at their arcuate ends an adjuster device consisting of curved plates 124 pivoted at 126 at one end thereof to the tracks 80 and atthe other end connected to one end of an extensible coil spring 125 whose other end is connected to the tracks 80.

' Adjustably associated with the tables 82 are the base plates 127 each of which has preferably formed integral therewith a slotted extension 104 in which slides a rack rod 105, the said rod having fixed thereto a spindle 134 on which is mounted a rotatable roller 107. On each of the extensions 104 is a collar 108, and a coil spring 121surrounds the respective extensions 104 and abuts the respective collars 108 at one end and the respective base plates 127 at the other end. Said base plates are adapted to be adjustably positioned in openings 135 in the tables 82 and to be secured thereto by screws 128 or other suitable means; such plates 127 have pintle pins 130 for blank folding flaps 89, 90, 91 and 92; the flaps 89 and 90 are respectively located at the opposite ends of the tables 82 and the respective flaps 91 and 92 are located on opposite sides of the tables 82. There is an opening 136 in each of the base plates 127 and in the flaps 89, 90, 91 and 92 to permit the rack rods 105 when operated to project therethrough. Each of the blank folding flaps 89, 90, 91 and 92 is provided with a mutilated spur pinion 106, and said flaps and the pinions 106 are fixed on the pintle pins 130.

To the framing 1 is atliXed a series of cams 108,109, 110,111,112, 113 and 114. Also attached to the framing 1 is the cam 115, and to one of the tracks 80 is fixed the bracket 116. Said bracket 116 has an opening therein for a rotatable spindle 117 which has fixed thereto a toothed collar 118 cooperating with a toothed sleeve 131 secured to the bracket. 114. The spindle 117 is attached to a plate 119 having a series of projecting arms 120 adapted to eject envelopes from the apparatus one by one after they have been completed on the apparatus. Surrounding the spindle 117 is a coil spring 122 whose opposite ends abut respectively the plate 119 and the bracket 116. Such coil spring 122 serves to prevent the plate 119 with arms 120 spinning after each movement thereof through contact with the arms 120 separately by the catch 85 on the rack links 83. The fender 123 is fixed'to the framing 1 below the projecting arms 120.

' the rollers 36 are rotated, blanks 6 will befed forwardly one by one by. the inserts 37 from the pile of blanks in the magazine thereof onto the driven belt 10 and under the pressure roller 9. Each blank 6 is thus carried over the top of the table 2 and passes under the blank carrying rollers 20 until its forward edge abuts the lays orstops 25; it is held there until one of the cams 66 contacts with and raises the roller 24 and releases the lays or stops 25 from engagement with the springs 26; the spring 27 keeps the forward edge of the blank 6 depressed to be en gaged by the gripper 68 when the latteris released from the cam 74. When engaged by the gripper 68 the blank 6 is temporarily.

secured to the endless chain 51. The blank 6 is now passed around the rollers 28 and pressed by the rollers 33 against the prints on such rollers, the prints 65 having prev1- ously been coated with adhesive from the transfer rollers 62.

On leaving the rollers 28 the blank 6 is now drawn by the chain 51 into and along the chute 75 with its adhesive edges facing upwardly and it then passes beneath the tensioning balls 77 in the guide device 76 (see F 32) and it then passes onto the top of one of the folders 82 and beneath the rotatable creasing elements 79. lVhen one portion of the creasing elements 79 has engaged with forward portion of the blank 6 simultaneously with the engagement of the blank 6 by the grippers 102 through contact with the cam 108, so also will the gripper 68 contact with the cam 115 and release the creased blank 6 (see Fig. 35) from the chain 51. As the folder 82 on which the blank is situated is travelling forwardly one of the creasing elements 79 will crease an opposite portion of the blank (see Fig. 36) and the grippers 103 will en age with the blank through contact with the cam 109; the blank 6 is thus firmly held upon the associated folder 82. During such action the leading flap 90 of the folder 82 will be operated through contact with the cam 110; when the associated folder 82 is clear of the creasing elements 79 the rear flap 89 of the folder 82 will be raised through contact with the cam 111, and when both said flaps 90 and 89 have completed their folding operation on the portions of the blank 6 the side flap 91 of the folder is operated through contact wit-h the cam 112 (see Fig. 38) when the grippers 102 and 103 will be released from the blank 6. When the flap 91 hasfcompleted its folding operation on the blank 6, theother side flap 92 is operated (see Fig. 40) through contact with the cam 113 and the flaps 89, 90, and 91 will return to normal position. Operation of the said flaps 89, 90, 91 and 92 is effected through the respective cams 110, 111, 112, and 113 with which the rollers 107 on the rack rods 105 are adapted to contact, the said flaps having the mutilated gear pinions 106 to co operatewith said rack rods.

As the flap 92 is performing its folding operation on the blank 6 so will one of the blades 120 enter beneath the envelope flap (see Fig. 41) operated upon by the flap 92; as the flap 92 is returning to normal position through the automatic operation of the spring 121 the hinged platform 88 will be raised by the roller 94 contacting with the cam 114. When the platform 88 has been raised (see Fig. 42) the trip finger-85 will contact with and operate the arms 120 to eject the completed envelopes one by one (see Fig. 43) from the apparatus over the fender 123. In every case the flaps 89, 90, 91'and 92 after be. 

